The swelling has gone down a little.

肿消了一点。

《新英汉大辞典》

“When the swelling in your legs goes down,” I add, just to give her a little boost, “I could really use your help with the dishes.

“等你的腿消肿后，”我安慰她，“我真想请你帮我打理下餐具。”

youdao

After surgery, the heart will be a little weaker than it was before, and, therefore, the body may start to hold onto fluid, causing swelling and puffiness.

在手术后，心脏比以前会有一点虚弱，并且，因此，机体可能开始保持液体，引起水肿和虚胖。

youdao

Khan emerged for the fifth, mouth hanging a little open and with a small swelling under the right eye - and he was noticeably a little slower throughout the round.

BBC: Khan stops Kristjansen in seven

Glad, and a little nervous a surge of apprehension is swelling in my stomach.

NPR: Excerpt: 'The Sister'

"The swelling is going to take a little more time to resolve, but he seems to be a very happy kind of guy, " Polonski said.

CNN: Man's eye saved after impalement